jsPerf.app is an online JavaScript performance benchmark test runner & jsperf.com mirror. It is a complete rewrite in homage to the once excellent jsperf.com now with hopefully a more modern & maintainable codebase.

jsperf.com URLs are mirrored at the same path, e.g:

https://jsperf.com/negative-modulo/2

Can be accessed at:

https://jsperf.app/negative-modulo/2

~~ vs >> vs parseInt (bitwise operators) (v5)

Revision 5 of this benchmark created by Taner on July 4, 2011

Test runner

Ready to run.

Testing in
Test		Ops/sec
NOT	`~~2.353753958395;`	ready
SHIFT	`2.353753958395 >> 0;`	ready
parseInt	`parseInt(2.353753958395, 10);`	ready
floor	`Math.floor(2.353753958395);`	ready
AND	`2.353753958395 \| 0;`	ready
toFixed	`2.353753958395.toFixed();`	ready
toPrecision(1)	`2.353753958395.toPrecision(1);`	ready

Revisions

You can edit these tests or add more tests to this page by appending /edit to the URL.

Revision 1: published by @acazsouza on September 7, 2010
Revision 2: published by macem on June 23, 2011
Revision 3: published by Sebmaster on June 23, 2011
Revision 4: published on June 29, 2011
Revision 5: published by Taner on July 4, 2011
Revision 6: published by void_0 on July 5, 2011
Revision 7: published by Miller Medeiros on August 25, 2011
Revision 8: published on August 26, 2011